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Analog Devices Inc./Maxim Integrated MAX4265ESA
- Part No.:
- MAX4265ESA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4265ESA.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,361
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Product details
Overview
The MAX4265ESA from Maxim Integrated is a single, unity-gain stable, ultra-low-distortion voltage-feedback operational amplifier optimized for high-frequency signal conditioning. It delivers 400MHz -3dB bandwidth, 900V/µs slew rate, and -90dBc spurious-free dynamic range at 5MHz while driving a 100Ω load from a +4.5V to +8.0V single supply. Its 8nV/√Hz input voltage noise density and ±45mA output drive make it suitable for high-speed ADC driver and IF amplifier applications in telecom infrastructure.
For engineers reviewing the MAX4265ESA datasheet, MAX4265ESA pinout, MAX4265ESA application, or MAX4265ESA equivalent, key selection criteria include its unity-gain stability, disable-mode high-impedance output control, 8-pin µMAX package footprint, and verified SFDR performance under 100Ω load conditions - all critical for RF signal chain integrity and power-sensitive high-bandwidth designs.
Technical Context
The MAX4265ESA employs proprietary bipolar process technology to achieve ultra-low distortion in single-supply operation - a capability typically reserved for dual-supply op amps. Its internal compensation ensures unity-gain stability without external phase compensation components.
It features an active-low DISABLE pin that reduces quiescent current to 1.6mA per amplifier and places the output in high-impedance state, enabling power-gated signal routing in multiplexed or battery-constrained systems. Input common-mode range extends from (VEE + 1.6V) to (VCC − 1.6V), supporting wide-swing input signals in +5V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| -3dB Bandwidth | 400MHz - supports full-power signal fidelity up to 270MHz with 1Vp-p swing into 100Ω. |
| Slew Rate | 900V/µs - enables clean 1V step response with 1ns rise/fall time and 15ns 0.1% settling. |
| SFDR @ 5MHz | -90dBc - ensures minimal harmonic contamination in baseband and IF sampling paths. |
| Voltage Noise Density | 8nV/√Hz - preserves SNR in precision gain stages preceding 14–16-bit ADCs. |
| Output Drive | ±45mA - sustains linear operation driving 100Ω loads while maintaining DC accuracy and AC linearity. |
| Disable Current | 1.6mA per amplifier - reduces system standby power without requiring PCB-level enable logic rework. |
| Input CM Range | (VEE + 1.6V) to (VCC − 1.6V) - accommodates rail-to-rail input signals in +5V systems with 1.1V output headroom. |
Pinout & Package
The MAX4265ESA is housed in an 8-pin µMAX® package (pin-compatible with SO-8), measuring 3mm × 3mm × 0.8mm with exposed pad for thermal enhancement. The package supports standard reflow profiles and offers superior high-frequency layout compactness versus SOIC.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | DISABLE | Active-low digital control input; pulls output to high-Z when low, reducing supply current to 1.6mA. |
| 2 | IN− | Inverting input terminal; differential pair input node with 40kΩ differential and 1MΩ common-mode input resistance. |
| 3 | IN+ | Noninverting input terminal; accepts input common-mode voltages from VEE+1.6V to VCC−1.6V. |
| 4 | VEE | Negative power supply pin; tied to ground in single-supply operation (+4.5V to +8.0V). |
| 5 | OUT | Amplifier output; delivers ±45mA into 100Ω while maintaining <−90dBc SFDR at 5MHz. |
| 6 | VCC | Positive power supply pin; operates from +4.5V to +8.0V; requires 1nF + 0.1µF ceramic bypassing. |
| 7 | N.C. | No internal connection; electrically isolated; must be left floating or grounded per layout best practice. |
| 8 | N.C. | No internal connection; same as Pin 7 - no routing or soldering required. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable architecture | Eliminates need for external compensation in buffer/gain=1 configurations, simplifying layout and reducing BOM count. |
| Active-low disable mode | Reduces per-amplifier supply current from 28mA to 1.6mA and isolates output without external switches or level shifters. |
| 100Ω load drive capability | Maintains -90dBc SFDR and 0.1dB gain flatness to 100MHz, enabling direct interface to 50Ω/100Ω transmission lines and ADC inputs. |
| Low 8nV/√Hz input voltage noise | Preserves dynamic range in front-end gain stages before high-resolution ADCs, especially critical at >10MHz signal frequencies. |
| Single-supply +4.5V to +8.0V operation | Supports industrial and telecom systems using regulated +5V rails without negative supply generation or charge pumps. |
Applications
| Base-Station IF Amplifier | High-Speed ADC Driver |
|---|---|
Use Scenario: Amplifies intermediate frequency signals (e.g., 70MHz, 140MHz) in LTE/5G macrocell transceivers prior to digitization. IC Role / Device Role / Timing Role: Low-noise, low-distortion gain block ensuring SFDR >85dBc across channel bandwidths up to 100MHz. Use Value: Enables 16-bit ADC utilization without harmonic folding; eliminates need for external filtering or gain staging. | Use Scenario: Buffers analog input to pipeline or interleaved ADCs operating at ≥65MSPS with 12–16-bit resolution. IC Role / Device Role / Timing Role: High-slew-rate, low-output-impedance driver delivering fast settling (<15ns) and minimal THD+N into capacitive ADC inputs. Use Value: Prevents aperture jitter degradation and maintains ENOB by minimizing settling error and intermodulation distortion. |
| RF Telecom Signal Chain | High-Frequency DAC Output Buffer |
Use Scenario: Signal conditioning stage in microwave backhaul modems and point-to-point radios handling QAM-256/1024 waveforms. IC Role / Device Role / Timing Role: Wideband linear amplifier preserving EVM and ACLR across 20–200MHz instantaneous bandwidths. Use Value: Achieves >45dB ACLR at 20MHz offset without post-filtering; supports >200MHz full-power bandwidth for multi-carrier signals. | Use Scenario: Isolates and amplifies DAC output in direct-conversion transmitters (e.g., IQ modulator interfaces) operating up to 125MHz. IC Role / Device Role / Timing Role: Low-distortion output buffer with high output current (±45mA) and fast disable for TDD switching. Use Value: Enables clean DAC output swing into 50Ω loads; disable time of 750µs supports precise TX/RX timing alignment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-distortion op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8009ARZ | Higher 1000V/µs slew rate but only 220MHz bandwidth; no disable function; SO-8 package. | Limited to lower-frequency, higher-slew applications where power-down is not required. | Select AD8009ARZ when absolute slew rate dominates over SFDR at >50MHz or disable functionality is unnecessary. |
| LMH6629MA/NOPB | Lower 5.5nV/√Hz noise but 260MHz bandwidth; no disable; SO-8; requires dual supply for optimal distortion. | Better suited for low-noise preamp stages below 100MHz where unity-gain stability and single-supply operation are secondary. | Choose LMH6629MA/NOPB for sub-100MHz, ultra-low-noise sensor or medical front ends where disable mode is irrelevant. |
Compared with AD8009ARZ and LMH6629MA/NOPB, the MAX4265ESA uniquely combines 400MHz bandwidth, -90dBc SFDR at 5MHz, unity-gain stability, and integrated disable in a space-saving µMAX package - making it the only option meeting all three requirements simultaneously for compact, power-aware RF signal chains.
Availability
The MAX4265ESA is available at Aetrix Electronics and suitable for base-station IF amplifiers, high-speed ADC drivers, RF telecom signal chains, and high-frequency DAC buffers requiring stable component supply across extended production lifecycles.
Supply support for MAX4265ESA includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs high-performance analog and mixed-signal ICs for communications, computing, and industrial applications.
The MAX4265–MAX4270 family was engineered specifically for ultra-low-distortion, wideband signal conditioning in +5V telecom and instrumentation systems - prioritizing SFDR, load drive, and disable-mode power efficiency over general-purpose op amp traits.
FAQ
What is the maximum load capacitance the MAX4265ESA can drive without external isolation?
The MAX4265ESA maintains stability with capacitive loads up to 15pF and less than 2dB peaking in small-signal gain response. For larger loads (e.g., >15pF coaxial cables or ADC input capacitance), a series isolation resistor (e.g., 6–18Ω depending on CL) must be placed between the MAX4265ESA output and the load to preserve phase margin. This requirement is confirmed in the Typical Operating Characteristics section of the MAX4265ESA datasheet, Figure 2 and Figures 3–4.
Does the MAX4265ESA require dual supplies to achieve its specified SFDR performance?
No. The MAX4265ESA achieves its -90dBc SFDR at 5MHz and -47dBc at 100MHz while operating from a single +4.5V to +8.0V supply, as verified in the AC Electrical Characteristics table (page 3) and Distortion vs. Frequency plots (page 7). Its proprietary bipolar process enables dual-supply-level distortion performance in single-supply configurations - a key differentiator versus most competing op amps.
What is the typical enable time and disable time for the MAX4265ESA's disable function?
The MAX4265ESA has a typical enable time (tEN) of 100ns and a typical disable time (tDIS) of 750µs, measured at the output transitioning from high-Z to active and vice versa. These values are specified under VIN = +1V step conditions in the AC Electrical Characteristics table (page 6) and visually confirmed in the DISABLE/ENABLE Response plot (Figure MAX4265/70-32). This fast enable supports burst-mode signal routing; the slower disable avoids transient coupling during power-down.
Can the MAX4265ESA drive a 50Ω load while maintaining its specified distortion performance?
Yes - the MAX4265ESA is characterized driving a 100Ω load to VCC/2, which represents a 50Ω differential termination in single-ended configurations. Its SFDR (-90dBc @ 5MHz), second/third harmonic distortion, and IP3 (32dBm @ 20MHz) are all measured under this 100Ω condition. Driving a true 50Ω load (e.g., 50Ω to ground) reduces output swing by ~3dB but retains linearity within datasheet limits, as confirmed by the DISTORTION vs. LOAD RESISTANCE plots (pages 7–8) showing monotonic degradation down to 50Ω.
Is the MAX4265ESA pin-compatible with other devices in the MAX4265–MAX4270 family?
The MAX4265ESA (8-pin µMAX) shares identical pinout with MAX4266ESA and MAX4267ESA, differing only in internal compensation (unity-gain vs. G≥2 vs. G≥5). All three use the same 8-pin µMAX footprint, allowing drop-in replacement in unity-gain designs - though gain-setting resistors must be verified for stability if substituting MAX4266ESA/MAX4267ESA. This compatibility is explicitly documented in the Pin Configurations section (page 12) and Selector Guide (page 1).
MAX4265ESA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 900V/µs
- Gain Bandwidth Product:
- 400 MHz
- -3db Bandwidth:
- 400 MHz
- Current - Input Bias:
- 3.5 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 28mA
- Current - Output / Channel:
- 45 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 8 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4265ESA FAQ
1.How can I place an order for MAX4265ESA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4265ESA on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX4265ESA reliable?
The price and inventory of MAX4265ESA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4265ESA is usually 5 days.
3.What payment methods are accepted for MAX4265ESA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4265ESA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4265ESA?
MAX4265ESA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4265ESA order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX4265ESA?
For technical support, including MAX4265ESA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4265ESA requirements.
6.How does Aetrix verify that MAX4265ESA is sourced from the original manufacturer or authorized distributors?
All MAX4265ESA products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX4265ESA meets industry standards.
7.What is the process for return or replacement of MAX4265ESA?
All MAX4265ESA units undergo pre-shipment inspection (PSI). If there is an issue with MAX4265ESA, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX4265ESA part is unused and in its original packaging.
Return procedure for MAX4265ESA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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